EP1916176B1 - Elektromechanische lenkradhilfe für auto - Google Patents

Elektromechanische lenkradhilfe für auto Download PDF

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Publication number
EP1916176B1
EP1916176B1 EP06799645A EP06799645A EP1916176B1 EP 1916176 B1 EP1916176 B1 EP 1916176B1 EP 06799645 A EP06799645 A EP 06799645A EP 06799645 A EP06799645 A EP 06799645A EP 1916176 B1 EP1916176 B1 EP 1916176B1
Authority
EP
European Patent Office
Prior art keywords
steering wheel
phase
electric motor
rotor
stator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06799645A
Other languages
English (en)
French (fr)
Other versions
EP1916176A1 (de
EP1916176B8 (de
EP1916176A4 (de
Inventor
Aleksandr Fedorovich Shevchenko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otkritoe Aktsionernoe Obschestvo "Kaluzskiy Zavod Elektronnix Izdeliy"
Original Assignee
Otkritoe Aktsionernoe Obschestvo "Kaluzskiy Zavod Elektronnix Izdeliy"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otkritoe Aktsionernoe Obschestvo "Kaluzskiy Zavod Elektronnix Izdeliy" filed Critical Otkritoe Aktsionernoe Obschestvo "Kaluzskiy Zavod Elektronnix Izdeliy"
Priority to SI200631097T priority Critical patent/SI1916176T1/sl
Publication of EP1916176A1 publication Critical patent/EP1916176A1/de
Publication of EP1916176A4 publication Critical patent/EP1916176A4/de
Publication of EP1916176B1 publication Critical patent/EP1916176B1/de
Application granted granted Critical
Publication of EP1916176B8 publication Critical patent/EP1916176B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0409—Electric motor acting on the steering column
    • B62D5/0412—Electric motor acting on the steering column the axes of motor and steering column being parallel
    • B62D5/0415—Electric motor acting on the steering column the axes of motor and steering column being parallel the axes being coaxial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the declared invention relates to car driving means and may be used in order to accomplish a steering wheel force reduction, in particular, upon manipulations at small speeds and upon a turn of wheels when a car is in stationary state.
  • DE 10115082 A1 discloses a steering wheel electromechanical booster according to the preamble of claim 1.
  • a car steering wheel electromechanical booster comprising a steering wheel torque sensor, a car speed sensor, a control unit, connected to said sensors as well as an electric motor, which is controllable in response to signals from the control unit and which connected to an output shaft by means of speed reduction device (see the RU 2158692 , Int. CL: B 62 D 5/04, 2000).
  • the electric motor in this device is a three-phase machine with a number of teeth on stator equal to 12, and on rotor, equal to 8, but a magnetic system of the electric motor is made with a relative slanting of rotor and stator teeth, therewith, a the crown slanting and width of the stator and rotor teeth with respect to an air gap are selected in determined correlations to a tooth pitch with respect to the rotor.
  • the closest analogue with respect to the declared steering wheel electromechanical booster is a steering wheel electromechanical booster, comprising a body, wherein there are positioned input and output shafts, which are interconnected with the aid of a torsion bar, which is embodied in the form of a torque sensor sensing element, and are linked with the steering wheel and a steering mechanism by the other end thereof, an electric motor, comprising a stator with a magnet core, having n pronounced poles, and with a three-phase winding, which is accomplishes with coils, that are placed in six equal alternating phase areas in such a way that one area is assigned to one pole and with several coils belonging to one phase in each phase area, and a rotor with n-2 poles, which are embodied in the form of permanent magnets, therewith, the rotor is mounted on the output shaft, a controllable source for supplying the stator three-phase winding of the electric motor, a sensor of the rotor position of the electric motor and a control unit, input
  • the coils of the electric motor stator three-phase winding in the phase areas, belonging to one phase, are connected in a series aiding configuration.
  • An electrical motor for a high-torque direct-drive electromechanical booster of steering wheel should have a maximal moment upon the given dimensions with maximal electromagnetic loads.
  • a form of mechanical characteristic i.e., points of nonworking stroke and short circuit
  • a problem, to solving of which the present invention is directed, consists in a device creation, wherein there is excluded the transfer on the steering wheel a foreign disturbing moment and wherein there is improved a technological effectiveness of the electric motor stator manufacturing and of the steering wheel booster manufacturing in whole as well as there is improved their useful qualities.
  • the technical result is obtained by means of creation of the steering wheel electromechanical booster, comprising a body, wherein there are positioned input and output shafts, which are interconnected with the aid of a torsion bar, which is embodied in the form of a torque sensor sensing element, and are linked with the steering wheel and a steering mechanism by the other end thereof, an electric motor, comprising a stator with a magnet core, having n pronounced poles, and with a three-phase winding, which is accomplished with coils, that are placed in six equal alternating phase areas in such a way, that one area is assigned to one pole, and with several coils, belonging to one phase in each phase area, and a rotor with n-2 poles, which are embodied in the form of permanent magnets, therewith, the rotor is mounted on the output shaft, a controllable source for supplying the stator three-phase winding of the electric motor, a sensor of the rotor position of the electric motor and a control unit, inputs of which
  • the parallel connection of the coils in the phase areas allows to form short-closed contours in the stator winding, therewith, in adjacent coils of electromotive force (EMF) is phase-shifted one.
  • EMF electromotive force
  • the motor rotor which is located on the output shaft, begins to work out these disturbances, whereby currents appear in the contours of the winding.
  • a damping torque which is created by these currents, kills the entered disturbances.
  • the usage the magnetic core of the electric motor as a steering wheel booster body allows to simplify the construction and technology of the steering wheel electromechanical booster manufacturing.
  • a positioning of the moment torsion-sensor inside of hollow output shaft or inside of hollow input shaft allows to reduce the steering wheel electromechanical booster dimensions.
  • the parallel connection of the coils leads to an increase of the turns in the coil. It, in turns, allows to fulfilling their number selection more optimally, and an electromagnetic moment is increased thereby.
  • a car steering wheel electromechanical booster consists of a body 1, an input shaft 2 and output shaft 3, connected to one another by means of torsion 4, which is sensing element of moment sensor 5, measuring a moment, applied to the steering wheel, and forming corresponding output signals, an electric motor 6, a controllable source (not shown) for supplying the three-phase stator winding of the electric motor, a rotor position sensor 7 of the electric motor and a control unit (not shown).
  • the inputs of the control unit are connected to the outputs of the moment sensor 5 and of the rotor position sensor 7 of the electric motor, but the output is connected to the control input of said supplying source.
  • the electric motor 6 consists of stator with a magnet core 8 and a rotor 9, which is mounted on the output shaft 3 of the steering wheel booster.
  • the electric motor 6 is three-phase one.
  • a stator 10 is made with pronounced poles 11, on which coils 12 are singly on one pole positioned.
  • the rotor 9 is multi-pole one and it is made with an energizing from permanent magnets 13.
  • a number of the stator poles 11 differ from a number of the rotor poles by two.
  • the rotor position sensor 7 consists of three Hall sensors, which are shifted with respect to each other by 120 el. degrees and which fix the rotor angular position with respect to the rotor 9 leakage fluxes, which are created by the permanent magnets 13.
  • the stator 10 coils having origins A, B and C and ends X, Y and Z, are positioned in six phase areas. In each phase area there are several coils, which are connected with parallel aiding configuration and which belong to one phase.
  • the stator magnet core 8 may be used as a body of the steering wheel booster (it may be brought in coincidence with the body 1). Such an accomplishment depends on technological possibilities upon a construction manufacturing.
  • the torsion 4 of the moment sensor 5 may be positioned inside of the hollow output shaft 3 or inside of the hollow input shaft 2.
  • Such a location of the torsion allows to carrying out a splined joint of the input shaft and the output shaft with a back play, which equals to value of the torsion wind-up angle.
  • a selection of one or another variant of the torsion positioning is determined by constructive peculiarities of the steering wheel electromechanical booster.
  • the declared steering wheel electromechanical booster operates as follows.
  • the electrical motor 6 control unit Upon an occurrence of signal on the moment sensor 5 the electrical motor 6 control unit generates a power controlling signal, which is applied to the electric motor 6 windings in order to create a required compensating moment on a steering mechanism. Therewith, a value of the signal on the winding 12 is formed taking into consideration the signals of the rotor position sensor 7.
  • An application of the winding 12 with a connection of the coils in phase area in a parallel aiding configuration allows to simplify the technology of the electrical motor 6 manufacturing as well as to improve weight and dimensions values of the electrical motor 6 and of the steering wheel booster in whole by means of more exact selection of number of the phase turns.
  • the weight and dimensional values of the motor are determined by value of the electromagnetic moment upon the given dimensions.
  • the moment value is proportional one to a product of current rate, number of turns and induction in air gap.
  • an increase of the moment value may be obtained only by means of selection of the optimal number of turns in a phase. But the increase of the number of turns leads to an increase of counter-electromotive force of the winding and, therefore, to a reducing of current rate in the winding and to the moment reduction.
  • a point of nonworking stroke of the mechanical characteristic is also varies, a value of which is proportional to the value of applied voltage and is in inverse proportion with respect to the number of turns in the coil and to a magnetic flow.
  • Electric motors with coils which are connected in series in phase areas, have a small number of turns in the coil, but therefore their number may be varied with a large discretization of 3, 4, 5 and so on.
  • the winding with a number of turns in the coil, which is equal to 5.3 in the motor with three coils, connected in series in a phase area, but upon the parallel connection of three coils upon the same voltage the number of turns in the coil should be increased thrice, and it may be taken as 5.3 x 3 ⁇ 16.
  • a connection of the coils of the stator 10 of the electric motor 6 in each phase area, belonging to one phase in a parallel aiding configuration differs gainfully the declared invention from the closest analogues, since it allows to exclude the transfer on the steering wheel a foreign disturbing moment, essentially to improve a technological effectiveness of the electric motor stator manufacturing and of the steering wheel booster manufacturing in whole as well as to improve their useful qualities.
  • the usage of the claimed invention allows to improve a safety and a convenience upon a car driving.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (4)

  1. Elektromechanische Lenkhilfe, umfassend:
    einen Körper (1), wobei eine Eingangswelle (2) und
    eine Ausgangswelle (3) mit Hilfe eines Torsionsstabs (4), bei dem es sich um einen Drehmomentsensor (5) handelt, miteinander verbunden sind, und wobei das andere Ende der Eingangswelle (2) und der Ausgangswelle (3) mit einem Lenkrad bzw. einem Lenkmechanismus verbunden sind,
    einen Elektromotor (6), umfassend:
    einen Stator (10) mit einem magnetischen Kern (8), der n ausgeprägte Polstücke (11) hat, und einer dreiphasigen Wicklung, die mit Spulen (12) implementiert wird, welche in sechs gleichen, abwechselnden Phasenbereichen platziert sind, derart, dass ein Phasenbereich einem Magnetpol zugeordnet ist, und wobei mehrere Spulen zu einem Phasenbereich gehören, und
    einen Rotor (9) mit n-2 Polen, die unter Verwendung von Permanentmagneten (13) implementiert werden, wobei der Rotor (9) auf der Ausgangswelle angebracht ist,
    eine steuerbare Quelle zur Versorgung der dreiphasigen Wicklung des Stators des Elektromotors (6),
    einen Rotorpositionssensor (7) des Elektromotors und
    eine Steuereinheit, von der Eingänge mit den Ausgängen des Drehmomentsensors (5) und des Rotorpositionssensors (7) verbunden sind und deren Ausgang mit dem Steuereingang der Versorgungsquelle verbunden ist,
    dadurch gekennzeichnet, dass
    die Spulen (12) der dreiphasigen Wicklung zu einem Phasenbereich gehören, der in einer Parallelkonfiguration verbunden ist.
  2. Elektromechanische Lenkradhilfe nach Anspruch 1, dadurch gekennzeichnet, dass der magnetische Kern (8) als ein Körper (1) der Lenkhilfe verwendet wird.
  3. Elektromechanische Lenkradhilfe nach Anspruch 1, dadurch gekennzeichnet, dass der Torsionsstab (4) des Drehmomentsensors (5) in der hohlen Ausgangswelle positioniert ist.
  4. Elektromechanische Lenkradhilfe nach Anspruch 1, dadurch gekennzeichnet, dass der Torsionsstab (4) des Drehmomentsensors (5) in der hohlen Eingangswelle positioniert ist.
EP06799645A 2005-08-19 2006-08-14 Elektromechanische lenkradhilfe für auto Not-in-force EP1916176B8 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200631097T SI1916176T1 (sl) 2005-08-19 2006-08-14 Elektromehanski ojačevalnik krmilnega obroča avtomobila

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005126251/11A RU2278797C1 (ru) 2005-08-19 2005-08-19 Электромеханический усилитель руля автомобиля и электродвигатель для усилителя руля
PCT/RU2006/000429 WO2007024157A1 (fr) 2005-08-19 2006-08-14 Amplificateur electromecanique du volant d'une automobile

Publications (4)

Publication Number Publication Date
EP1916176A1 EP1916176A1 (de) 2008-04-30
EP1916176A4 EP1916176A4 (de) 2009-08-12
EP1916176B1 true EP1916176B1 (de) 2011-06-01
EP1916176B8 EP1916176B8 (de) 2011-10-05

Family

ID=36714649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06799645A Not-in-force EP1916176B8 (de) 2005-08-19 2006-08-14 Elektromechanische lenkradhilfe für auto

Country Status (9)

Country Link
US (1) US8051943B2 (de)
EP (1) EP1916176B8 (de)
KR (1) KR101205129B1 (de)
CN (1) CN101365615B (de)
AT (1) ATE511468T1 (de)
ES (1) ES2367181T3 (de)
RU (1) RU2278797C1 (de)
SI (1) SI1916176T1 (de)
WO (1) WO2007024157A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI460415B (zh) * 2011-11-17 2014-11-11 Univ Nat Formosa 攜帶型汽車避震器檢測裝置

Also Published As

Publication number Publication date
KR101205129B1 (ko) 2012-11-26
US20090321173A1 (en) 2009-12-31
EP1916176A1 (de) 2008-04-30
US8051943B2 (en) 2011-11-08
ES2367181T3 (es) 2011-10-31
ATE511468T1 (de) 2011-06-15
WO2007024157A1 (fr) 2007-03-01
KR20080074089A (ko) 2008-08-12
EP1916176B8 (de) 2011-10-05
CN101365615A (zh) 2009-02-11
EP1916176A4 (de) 2009-08-12
SI1916176T1 (sl) 2011-10-28
CN101365615B (zh) 2011-01-12
RU2278797C1 (ru) 2006-06-27

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